SECTION FIVE TROUBLESHOOTING SYSTEM MESSAGES System messages advise the user of a system condition that requires an action and/or a response in order to proceed with the current procedure. Advisory Messages Advisory messages (see Table 5-1) are informational messages that help guide the user or bring attention to the laser’s condition. • Advisory messages appear on the same blue-gray background that many labels and prompts appear on.
Error Messages Errors are major faults in the system that cannot be resolved by either software, hardware, or user action. The following events take place: • The laser is placed in a safe state (laser engine is turned off and shutter is closed). • The user is told by an error message and voice confirmation that a fault has taken place. • The front panel controls are not functional other than the emergency shut-off switch and the On/Off key. The footswitch controls are also not functional.
Table 5-1. Advisory Messages Message Displayed Condition Action “Unable to recognize probe type in An unidentified fiber is connected User must select a probe type (slit Port XX. to a laser port. The laser fiber may lamp, LIO, or Endo) to clear the not include a RFID tag or the tag’s message. Please select probe type from data may be corrupted. options below.” “Please Insert Probe. Unit completes boot-up and no probe has been inserted. Select the Main Menu button to view or alter settings.
Table 5-2. Warning Messages Message Displayed Condition Action “Footswitch Configuration 0 Power 0 Standby/Ready” The first time after system initialization that User must acknowledge the a multi-function footswitch is connected message to clear the screen and not in Disabled mode. and continue. “Verify appropriate Dr. Filters are installed in all viewing devices.
SECTION SIX ACCESSORIES AND PARTS This section of the manual contains the various accessories that are available for use with the PurePoint™ Laser (see Table 6-1). If additional information is required for setup and use of the accessory, the Notes column of Table 6-1 provides references to that information. TABLE 6-1.
SLIT LAMPS WITH DOCTOR PROTECTION FILTERS AND ADAPTATIONS A slit lamp assembly is typically used to deliver the PurePoint™ laser treatment beam to the patient's eye. An adaptation, mounted on the slit lamp, is required to interface the slit lamp to the PurePoint™ laser. The adaptation consists of a zoom assembly with micromanipulator and a Doctor Protection Filter. The Doctor Protection Filter provides eye protection for the physician.
Spot size adjusting knob Figure 6-3 8065751131 Haag-Streit 900 BM 6.
POSITIONING THE DOCTOR PROTECTION FILTER The Doctor Protection Filter is used to protect the surgeon from harmful laser radiation that could damage his eyes. The Doctor Protection Filter is inserted between the binoculars and the slit lamp or microscope. WARNINGS! It is the operator's responsibility to properly install the Doctor Protection Filter and verify operation. Using the instrument with a Doctor Protection Filter that is improperly installed could result in operator injury.
ALCON SL 1000 AND ZEISS 30SL ADAPTATION Introduction The Doctor Protection Filter, fiber optic cable, mechanical micromanipulator with zoom, and beam splitter/accessories in combination with the Alcon SL 1000 Slit Lamp (or Zeiss 30SL) are designed exclusively for use with the PurePoint™ laser system. This instrument combination represents a complete ophthalmic unit. Please refer to the Alcon SL 1000 (or Zeiss 30SL) Operator's Manual for information not included in this manual.
WARNINGS! Verify that the label marking the laser exit aperture is in place. Refer to the figure below for the location of labels on the Alcon SL 1000. Never treat a patient when the PurePoint™ Laser is connected to a service computer. Defeat of the Doctor Protection Filter switches and/or incorrect installation of the Doctor Protection Filter assembly could result in ocular hazards to the surgeon. Please refer to the PurePoint™ Operating Instructions in section three for further warnings.
Adaptation Controls Laser Spot Size Indicator - Indicates diameter of laser spot in the microscope focal plane. Laser Spot Size Adjustment Lever - Used to adjust the laser spot size. Micromanipulator Control Lever - Used to position the laser spot around the microscope center field of view. Fiberoptic from EyeLite® Laser spot size adjustment knob To laser console Figure 6-7 Controls on Alcon SL 1000 Slit Lamp with Doctor Protection Filter and Adaptation Installed 8065751131 6.
Operation Operation of the Doctor Protection Filter • Before operating the slit lamp, the Doctor Protection Filter cable must be plugged in and firmly attached to the rear panel of the PurePoint™ laser system. • The Doctor Protection Filter is operated by moving the lever from the unprotected position to the filter protected (engaged) position. The 532nm laser treatment beam is not operational until the filter lever is in the engaged position.
3. If the diopter adjustment(s) of the microscope eyepieces are not accurate, the object and the laser focal point will not be in the same plane (for values between 50 µm and 500 µm). Consequently, the laser spot size on the fundus will be larger than the values set on the zoom. 4. To position the laser spot, use the procedures outlined in the previous section. 5. Activate the treatment laser only if the target area has been clearly localized and irradiation by a treatment laser is warranted.
ALCON LASER INDIRECT OPHTHALMOSCOPE - ADVANCED TECHNOLOGY (LIO-AT) Introduction The Alcon Laser Indirect Ophthalmoscope - Advanced Technology (LIO-AT) is an accessory for use exclusively with the PurePoint™ Laser. The Alcon LIO-AT is composed of a Heine diagnostic headset with integral laser delivery adaptation and an illumination power supply. The treatment laser beam and the aiming beam are both provided by the PurePoint™ Laser. The LIO-AT is connected to the PurePoint™ Laser via a fiber optic cable.
WARNINGS! The head-worn Laser Indirect Ophthalmoscope (LIO-AT) is designed solely for examination and treatment of the eye, particularly the retina. Use only the illumination power supply provided with LIO-AT. It is specially designed for medical applications. Insure that the selection on the PurePoint™ front panel is LIO. It is the responsibility of the operator to verify that the selection is correctly confirmed.
Alcon LIO-AT Icons and Labels The labels and icons shown in Figure 6-10 are found on the Alcon LIO-AT and are defined as indicated. No Continuous Use of LIO-AT; Refer to Operator's Manual 10 Minutes ON/20 Minutes OFF.
Alcon LIO-AT Safety Features • • • • • Labels on the instrument warn the operator about laser dangers. An On/Off (I/O) switch with indicator light controls the illumination power supply. When the indicator light is ON, the illumination power supply is ON. A protective housing covers the laser source completely and the beam will only exit through the LIO-AT exit window. A permanent Doctor Protection Filter on the LIO-AT headset protects the operator from incidental reflections of the laser beam.
Using the Optics Overband The pivoting overband allows the laser optics to be pushed up out of the operator's field of view (see Figure 6-11). It is locked in the end position and can only be released by pressing the Overband Adjustment Knob. To pivot the overband, press the Overband Adjustment Knob with the right hand and pivot the overband into the desired position (up for the “rest” position and down for the “working” position).
8. Remove the LIO-AT and look at the scale on the eyepieces to insure that the pupil distance is symmetrical. If not, center the headset and readjust the eyepieces. Correct adjustment of the optics is particularly important when examining small pupils. Once set, changing the adjustments is required only if another examiner uses the instrument. Controls for Observation and Illumination The Aperture Lever (see Figure 6-12) allows you to choose between two different-sized illumination fields.
Using the Alcon LIO-AT for Observation If the LIO-AT is used for illumination purposes only, the laser fiber does not need to be connected to the PurePoint™ Laser. Note: Put dust cover on fiber termination to protect fiber when not connected to PurePoint™ Laser. Laser 1. Turn the illumination power supply on. 2. Adjust the light intensity with the power supply illumination control knob. Using the Alcon LIO-AT for Laser Treatment Using the system in this mode enables photocoagulation with the LIO-AT.
6. Set the power below the nominal titration level by turning the Power Adjust knob on the PurePoint™ console counterclockwise. If the power parameter is not set below the nominal titration level, the message “Set Power < xxxx mW” will appear on the display. 7. If necessary press the Reset key to reset the shot counter to 0. You can now adjust exposure time, aiming beam power, and treatment beam power. 8. Select exposure time by pressing the Exposure Time Adjustment arrow keys.
12. Press the Standby/Ready key on the front panel. The green Standby LED turns OFF, and the red Ready LED illuminates. NOTE: The footswitch must be released to proceed to Ready mode. If the footswitch is depressed during power-up or while in Standby mode, “Release footswitch” is displayed. Release footswitch and proceed. 13. Use the Laser Vertical Adjustment Knob (see Figure 6-12) on the laser delivery adaptation to aim the laser at the desired location within the illumination field. 14.
ALCON LIO-AT MAINTENANCE This section contains information for basic care and maintenance of the instrument. If a problem occurs on the instrument, call the Alcon Technical Services department and give details of the breakdown circumstances and effects. From these elements, a technician will evaluate the problem and determine the maintenance requirements. WARNING! Maintenance on any part of the laser system must be performed with the laser off and the main power plug disconnected.
Changing The Illumination Bulb 1. Ensure that power switches on the PurePoint™ Laser and illuminator power supply are in the OFF (O) position. 2. Disconnect power cord from power source. 3. Pull the cord socket away from the bulb connector (see Figure 6-14). 4. Unscrew and remove the bulb connector, then pull the bulb out of the socket. WARNING! The bulb and bulb connector may be hot, and can burn your fingers. CAUTION Do not touch the glass part of the new bulb directly with your fingers.
SECTION SEVEN INDEX TO BE DETERMINED... 8065751131 7.
THIS PAGE INTENTIONALLY BLANK 7.
